CN113436937B

CN113436937B - Relay with safety device

Info

Publication number: CN113436937B
Application number: CN202110570841.6A
Authority: CN
Inventors: 杜展
Original assignee: Churod Electronics Wuhu Co ltd
Current assignee: Churod Electronics Wuhu Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2023-03-28
Anticipated expiration: 2041-05-25
Also published as: CN113436937A

Abstract

The invention relates to the technical field of relays with safety devices, and discloses a relay with a safety device, which comprises an armature and an electromagnetic core, wherein a high-temperature-resistant gasket is arranged on the side surface of the armature adjacent to the electromagnetic core, the high-temperature-resistant gasket is assembled to prevent the high-temperature-resistant gasket from being melted when a circuit is switched on, and the armature and the electromagnetic core are prevented from directly colliding, and the ceramic plate, the carbon fiber cloth and the polytetrafluoroethylene plate are made of high-temperature-resistant materials, so that the high-temperature-resistant gasket is prevented from being deformed due to high temperature generated by electric arc, the electric arc is prevented from directly puncturing the high-temperature-resistant gasket, the service life of the high-temperature-resistant gasket is prolonged.

Description

Relay with safety device

Technical Field

The invention relates to the technical field of relays with safety devices, in particular to a relay with a safety device.

Background

A relay, also known as a relay, is an electronic control device having a control system and a controlled system, and is generally used in an automatic control circuit to control a large current with a small current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

According to patent No. 202010908119.4, there is disclosed an electromagnetic relay, a plate-shaped pair of fixed terminals each including a first plate portion and a fixed contact disposed on the first plate portion; a movable contact piece including a pair of movable contacts arranged to face the fixed contacts, and provided to be movable in a contact direction in which the movable contacts are brought into contact with the fixed contacts and a separation direction in which the movable contacts are separated from the fixed contacts; a drive shaft connected to the movable contact piece; a driving device for moving the movable contact piece through the driving shaft; a housing portion including a plurality of wall portions extending in a moving direction of the movable contact piece, and a housing space surrounded by the plurality of wall portions and housing the fixed contact and the movable contact piece; and one or more magnets that generate a magnetic field in the housing space, wherein the first plate portion protrudes from any one of the wall portions to an outside of the housing space, and the one or more magnets are disposed facing a wall portion of the wall portions that is different from the wall portion from which the first plate portion protrudes, and the magnets can be easily disposed so as to uniformly generate a magnetic flux density in the housing space, and therefore an electromagnetic relay that easily uniformly generates a magnetic flux density in the housing space can be provided with a simple configuration.

The shortcoming of prior art lies in, can produce electric arc between electromagnetic core and the armature in an instant of circular telegram, and the high temperature that electric arc produced can melt the gasket for the gasket is not having crashproof function, and electricity makes electromagnetic core and armature damage easily, and current gasket is after long-time the use simultaneously, and the regional thinning that electromagnetic core pressed can break even, and the change of gasket is comparatively inconvenient.

Disclosure of Invention

The invention aims to provide a relay with a safety device, which can prevent a high-temperature-resistant gasket from being melted by high temperature generated by electric arc and is convenient to replace.

Technical scheme

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme: the utility model provides a relay with safety device, includes armature and electromagnetic core, armature is adjacent electromagnetic core's side is provided with high temperature resistant gasket, high temperature resistant gasket is assembled when the circuit switch-on, high temperature resistant gasket can not melt, and avoids armature with electromagnetic core direct impact.

Preferably, a groove is formed in the side face, adjacent to the electromagnetic iron core, of the armature, a driving piece and a locking piece are arranged in the groove, the driving piece is assembled to be used for locking the high-temperature-resistant gasket, and the locking of the high-temperature-resistant gasket is released through the locking piece.

Preferably, the high temperature resistant gasket includes potsherd, carbon cloth and polytetrafluoroethylene piece, carbon cloth fixed mounting in one side of potsherd, just it has the polytetrafluoroethylene piece to inlay in the carbon cloth.

Preferably, the ceramic plate is fixedly provided with symmetrically distributed clamping blocks relative to the side surface of the carbon fiber cloth.

Preferably, the opposite side surfaces of the two clamping blocks are both concave arc surfaces, and through holes are formed in the concave arc surfaces.

Preferably, the locking piece comprises a sliding rod and a spring, sliding grooves are formed in the opposite side faces of the grooves, the sliding rods are connected in the sliding grooves in a sliding mode, and the spring is arranged between the sliding rods and the sliding grooves.

Preferably, the driving part comprises a force application block and a driving piece, clamping grooves which are symmetrically distributed are formed in the side face of the armature opposite to the high-temperature-resistant gasket, the force application block is connected in the clamping grooves in a sliding mode, and the driving piece is fixedly installed on the top of the two force application blocks.

Preferably, a stress block is fixedly mounted on the outer wall of one end, adjacent to the spring, of the sliding rod, and the stress block is located at the bottom end of the force application block.

Preferably, two side surfaces of the force bearing block, which are in contact with the force application block, are both convex cambered surfaces.

Compared with the prior art, the relay with the safety device provided by the embodiment of the invention has the following beneficial effects:

the high-temperature-resistant gasket can be prevented from being melted by high temperature generated by electric arc, the ceramic plate, the carbon fiber cloth and the polytetrafluoroethylene plate are made of high-temperature-resistant materials, deformation caused by high temperature generated by the electric arc is avoided, the electric arc is prevented from directly puncturing the high-temperature-resistant gasket, the service life of the high-temperature-resistant gasket is prolonged, and meanwhile, the ceramic plate, the carbon fiber cloth and the polytetrafluoroethylene plate are made of non-conductive materials, so that the two circuits can be prevented from being connected in parallel.

According to the invention, the high-temperature-resistant gasket is convenient to replace, if the high-temperature-resistant gasket is damaged, the locking piece is unlocked by the driving piece, and the new high-temperature-resistant gasket is replaced, so that the replacement of the whole relay is avoided, and the cost is saved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic diagram of an armature and electromagnet core configuration according to the present invention;

FIG. 2 is a schematic cross-sectional view of an armature of the present invention;

FIG. 3 is a schematic view of a high temperature resistant gasket according to the present invention;

FIG. 4 is a schematic view of the bottom construction of the armature of the present invention;

FIG. 5 is a schematic view of the internal structure of the armature of the present invention;

FIG. 6 is a schematic diagram of a locking member of the present invention.

In the figure: 1. an armature; 2. an electromagnetic core; 3. a high temperature resistant gasket; 4. a drive member; 5. a locking member; 6. a stress block; 7. a clamping block; 8. a groove; 9. a card slot; 10. a through hole; 11. a chute; 31. a ceramic plate; 32. carbon fiber cloth; 33. a polytetrafluoroethylene sheet; 41. a force application block; 42. an active sheet; 51. a slide bar; 52. a spring.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure will be more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "including" or "comprising" and the like in this disclosure is intended to mean that the elements or items listed before that word, and equivalents thereof, are included without exclusion of other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The first embodiment is as follows:

as shown in fig. 1 to 3, the relay with the safety device provided by the invention comprises an armature 1 and an electromagnetic core 2, an electric arc can be generated at the moment of electrifying, and the melting point of the high temperature resistant gasket 3 is higher, so that the high temperature resistant gasket 3 cannot be deformed due to the high temperature generated by the electric arc, the electric arc is prevented from directly puncturing the high temperature resistant gasket 3, the high temperature resistant gasket 3 is damaged, the service life of the high temperature resistant gasket 3 is prolonged, and the armature 1 and the electromagnetic core 2 are prevented from directly colliding.

As shown in fig. 2 and 3, the ceramic sheet 31, the carbon fiber cloth 32, and the teflon sheet 33 are made of high temperature resistant materials, high temperature generated by an arc basically does not affect the ceramic sheet 31, the carbon fiber cloth 32, and the teflon sheet 33, and the ceramic sheet 31, the carbon fiber cloth 32, and the teflon sheet 33 are made of non-conductive materials, so that the two circuits can be prevented from being connected in parallel.

Example two:

as shown in fig. 2 to 6, a locking member 5 is arranged in the armature 1 and can fix the high temperature resistant gasket 3, a sliding rod 51 slides in a sliding groove 11 to lock or unlock a locking block 7 by the sliding rod 51, when the locking block 7 is inserted into a groove 8, the sliding rod 51 is inserted into a through hole 10, so that the high temperature resistant gasket 3 can be installed on the armature 1, when the high temperature resistant gasket 3 is damaged, the sliding rod 51 moves towards a spring 52 and is replaced by a new high temperature resistant gasket 3, and under the elastic force of the spring 52, the sliding rod 51 is inserted into the through hole 10 of the new high temperature resistant gasket 3.

Example three:

further, as shown in fig. 2, 4, 5 and 6, the driving part 4 is arranged in the armature 1, so that the high temperature resistant gasket 3 can be quickly removed, the force application block 41 slides in the clamping groove 9 by applying pressure on the driving sheet 42, and the force is transmitted to the force bearing block 6, and two side surfaces of the force application block 41, which are in contact with the force bearing block 6, are both convex cambered surfaces, so that the two force bearing blocks 6 respectively drive the two sliding rods 51 to keep moving away from each other, the sliding rods 51 are separated from the through holes 10, and the locking of the high temperature resistant gasket 3 is released.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A relay with a safety device, comprising an armature (1) and an electromagnetic core (2), characterized in that: a high-temperature-resistant gasket (3) is arranged on the side face, adjacent to the electromagnetic iron core (2), of the armature (1), and the high-temperature-resistant gasket (3) is assembled in such a way that when a circuit is switched on, the high-temperature-resistant gasket (3) cannot be melted and the armature (1) and the electromagnetic iron core (2) are prevented from directly colliding;

the high-temperature-resistant gasket (3) comprises a ceramic plate (31), carbon fiber cloth (32) and a polytetrafluoroethylene sheet (33), wherein the carbon fiber cloth (32) is fixedly installed on one side of the ceramic plate (31), and the polytetrafluoroethylene sheet (33) is embedded in the carbon fiber cloth (32);

a groove (8) is formed in the side face, adjacent to the electromagnetic iron core (2), of the armature (1), a driving piece (4) and a locking piece (5) are arranged in the groove (8), the driving piece (4) is assembled to be used for locking the high-temperature-resistant gasket (3), and the locking piece (5) is used for unlocking the high-temperature-resistant gasket (3);

the driving piece (4) comprises force application blocks (41) and driving pieces (42), clamping grooves (9) which are symmetrically distributed are formed in the side face, opposite to the high-temperature-resistant gasket (3), of the armature iron (1), the force application blocks (41) are connected in the clamping grooves (9) in a sliding mode, and the driving pieces (42) are fixedly installed on the tops of the two force application blocks (41);

locking piece (5) are including slide bar (51) and spring (52), spout (11) have all been seted up to the relative side in recess (8), sliding connection has slide bar (51) in spout (11), slide bar (51) with be provided with spring (52) between spout (11), slide bar (51) are adjacent fixed mounting has atress piece (6) on the outer wall of spring (52) one end, just atress piece (6) are located the bottom of application of force piece (41).

2. A relay with safety device according to claim 1, wherein: the ceramic plate (31) is fixedly provided with symmetrically distributed clamping blocks (7) opposite to the side surface of the carbon fiber cloth (32).

3. A relay with safety device according to claim 2, wherein: the opposite side surfaces of the two clamping blocks (7) are both concave cambered surfaces, and through holes (10) are formed in the concave cambered surfaces.

4. A relay with safety device according to claim 1, wherein: and two side surfaces of the stress block (6) in contact with the force application block (41) are both convex cambered surfaces.